"""
编码转换工具
用于处理各种编码问题和乱码转换
"""
import chardet


class EncodingConverter:
    """编码转换类"""
    
    def __init__(self):
        """初始化转换器"""
        self.original_encoding = None
        self.target_encoding = 'utf-8'
    
    def detect_encoding(self, file_path):
        """
        自动检测文件编码
        
        Args:
            file_path: 文件路径
        
        Returns:
            str: 检测到的编码类型
        """
        # TODO: 实现编码检测逻辑
        try:
            with open(file_path, 'rb') as f:
                raw_data = f.read()
                result = chardet.detect(raw_data)
                self.original_encoding = result['encoding']
                return self.original_encoding
        except Exception as e:
            print(f"编码检测失败: {str(e)}")
            return None
    
    def convert_file_encoding(self, input_path, output_path, 
                            source_encoding=None, target_encoding='utf-8'):
        """
        转换文件编码
        
        Args:
            input_path: 输入文件路径
            output_path: 输出文件路径
            source_encoding: 源编码，None则自动检测
            target_encoding: 目标编码
        
        Returns:
            bool: 是否转换成功
        """
        # TODO: 实现文件编码转换逻辑
        try:
            if source_encoding is None:
                source_encoding = self.detect_encoding(input_path)
            
            if source_encoding is None:
                return False
            
            # 读取原文件
            with open(input_path, 'r', encoding=source_encoding) as f:
                content = f.read()
            
            # 写入新文件
            with open(output_path, 'w', encoding=target_encoding) as f:
                f.write(content)
            
            return True
        except Exception as e:
            print(f"编码转换失败: {str(e)}")
            return False
    
    def convert_text(self, text, source_encoding, target_encoding='utf-8'):
        """
        转换文本编码
        
        Args:
            text: 输入文本
            source_encoding: 源编码
            target_encoding: 目标编码
        
        Returns:
            str: 转换后的文本
        """
        # TODO: 实现文本编码转换逻辑
        try:
            # 先编码为字节，再用目标编码解码
            encoded = text.encode(source_encoding)
            decoded = encoded.decode(target_encoding)
            return decoded
        except Exception as e:
            print(f"文本转换失败: {str(e)}")
            return text
    
    def fix_mojibake(self, text):
        """
        尝试修复乱码文本
        
        Args:
            text: 乱码文本
        
        Returns:
            str: 修复后的文本
        """
        # TODO: 实现乱码修复逻辑
        # 常见的乱码情况：GBK误识别为ISO-8859-1等
        encodings = ['gbk', 'gb2312', 'big5', 'utf-8', 'iso-8859-1']
        
        for enc in encodings:
            try:
                fixed = text.encode('iso-8859-1').decode(enc)
                return fixed
            except:
                continue
        
        return text

